Content editing involves reading through your entire manuscript at least twice and checking for plot holes, inconsistencies in voice/prose, and general remarks on the tone of the piece. This is not, however, limited to fiction editing. I have edited for web sites, cataloges, and press releases. The grammar will largely go untouched, as that is copy editing. If you want copy edits as well, I will be happy to do both for a rate of $45/hour.